The rebellious son of a long line of pureblood cartographers and diviners, Valen has spent most of his life trying to escape what society - and his family - have ordained for him. His own mother has predicted that he will meet his doom in water, blood, and ice. Her divination seems fulfilled when a comrade abandons Valen in a rainy wilderness half-dead, addicted to an enchantment that converts pain to pleasure, and possessing only a stolen book of maps.

Offered sanctuary in a nearby monastery, Valen discovers that his book - rumored to lead men into the realm of angels - gains him entry into a world of secret societies, doomsayers, monks, princes, and madmen, all seeking to unlock the mystery of a coming dark age. To his dismay, Valen must face what he fled so long ago, for the key to Navronne's doom is buried in half-forgotten myth and the secrets of his own past...